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Phys. Rev. Lett. 82, 2250 - 2253 (1999)

Quark Flavor Separation in Λ-Baryon Fragmentation

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Bo-Qiang Ma1,1b and Jacques Soffer2
1aCCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China
1band Institute of High Energy Physics, Academia Sinica, P.O. Box 918(4), Beijing 100039, China
2Centre de Physique Théorique, CNRS, Luminy Case 907, F-13288 Marseille Cedex 9, France

Received 27 October 1998; revised 23 December 1998

It is shown that unpolarized and polarized Λ and Λ̅ production in neutrino and antineutrino deep inelastic scattering, can provide a clean separation of unpolarized and polarized fragmentation functions of a quark into a Λ, for both light-flavor quarks and antiquarks and also for strange quarks. Combining with Λ and Λ̅ production in polarized electron deep inelastic scattering, one can systematically measure or check the various flavor and spin dependent fragmentation functions. Such measurements can provide crucial tests of different predictions concerning the spin structure of hadrons and the quark-antiquark asymmetry of the nucleon sea.


©1999 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.82.2250
DOI: 10.1103/PhysRevLett.82.2250
PACS: 13.87.Fh, 13.15.+g, 13.60.Hb, 13.88.+e

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